Design of micro/mesoporous zeolite-based catalysts for petrochemical and organic syntheses

This review systematizes and analyzes the physicochemical and catalytic properties of micro/mesoporous materials prepared by two-step recrystallization. The materials are divided into three groups according to the degree of recrystallization: (1) mesostructured zeolites (RZEO-1), (2) micro/mesoporous nanocomposites (RZEO-2), and (3) mesoporous materials with zeolite fragments (RZEO-3). Particular attention is focused on the catalytic properties of the recrystallized materials in petrochemical and organic syntheses. Main advantages of the micro/mesoporous molecular sieves over zeolites and mesoporous materials are demonstrated, and ways of obtaining new catalytic systems based on these molecular sieves are suggested.